AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.
Specifies the conditions under which data should be updated. If an update condition is specified for a request, the data will only be updated if the condition is satisfied. For example, if an attribute with a specific name and value exists, or if a specific attribute doesn't exist.
public class UpdateCondition
The UpdateCondition type exposes the following members
Gets and sets the property Exists.
A value specifying whether or not the specified attribute must exist with the specified
value in order for the update condition to be satisfied. Specify
Gets and sets the property Name.
The name of the attribute involved in the condition.
Gets and sets the property Value.
The value of an attribute. This value can only be specified when the
Supported in: 1.3
Supported in: 4.5, 4.0, 3.5
Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms